Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Chromosome Replication02:31

Chromosome Replication

10.8K
Before a cell can divide, it must accurately replicate all of its chromosomes, including the DNA and its associated histone and non-histone proteins.  This process begins at numerous origins of replication during the S phase of the cell cycle in each of a cell’s chromosomes simultaneously. Certain nucleotides can act as origins of replication, but these sequences are not well defined - especially in complex, multi-cellular, eukaryotic species. The length of DNA that spans an origin...
10.8K
DNA Replication02:40

DNA Replication

60.0K
DNA replication involves the separation of the two strands of the double helix, with each strand serving as a template from which the new complementary strand is copied.  After replication, each double-stranded DNA includes one parental or “old” strand and one “new” strand. This is known as semiconservative replication. The resulting DNA molecules have the same sequence and are divided equally into the two daughter cells.
Replication in Prokaryotes
DNA replication...
60.0K
Replication in Prokaryotes02:35

Replication in Prokaryotes

99.1K
Overview
99.1K
Replication in Prokaryotes01:32

Replication in Prokaryotes

28.1K
DNA replication has three main steps: initiation, elongation, and termination. Replication in prokaryotes begins when initiator proteins bind to the single origin of replication (ori) on the cell's circular chromosome. Replication then proceeds around the entire circle of the chromosome in each direction from the two replication forks, resulting in two DNA molecules.
Many Proteins Work Together to Replicate the Chromosome
Replication is coordinated and carried out by a host of specialized...
28.1K
Replication in Eukaryotes02:31

Replication in Eukaryotes

205.7K
Overview
205.7K
Factors Influencing Attraction IV: Reciprocity01:28

Factors Influencing Attraction IV: Reciprocity

294
Reciprocity in attraction is fundamental to social and romantic relationships, shaping how individuals form and maintain connections. The psychological principle underlying this phenomenon is that people tend to like those who express liking toward them. Balance theory supports this tendency, suggesting that mutual attraction fosters psychological harmony, whereas one-sided affection leads to discomfort and cognitive dissonance.The Psychological Mechanisms Behind ReciprocityWhen individuals...
294

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Stereoselective Asymmetric Syntheses of Molecules with a 4,5-Dihydro-1<i>H</i>-[1,2,4]-Triazoline Core Possessing an Acetylated Carbohydrate Appendage: Crystal Structure, Spectroscopy, and Pharmacology.

Molecules (Basel, Switzerland)·2024
Same author

A Dissipative Reaction Network Drives Transient Solid-Liquid and Liquid-Liquid Phase Cycling of Nanoparticles.

Angewandte Chemie (International ed. in English)·2023
Same author

A Molecular Replication Process Drives Supramolecular Polymerization.

Journal of the American Chemical Society·2021
Same author

Encoding Multiple Reactivity Modes within a Single Synthetic Replicator.

Journal of the American Chemical Society·2020
Same author

Compositional Persistence in a Multicyclic Network of Synthetic Replicators.

Journal of the American Chemical Society·2019
Same author

Two Synthetic Replicators Compete To Process a Dynamic Reagent Pool.

Journal of the American Chemical Society·2019
Same journal

Proton-Gated Torsional Spring for Molecular Energy Storage.

Journal of the American Chemical Society·2026
Same journal

Topologically Programmed Dual-Channel Covalent Organic Frameworks Decouple Gas and Ion Fluxes for Acidic CO<sub>2</sub> Electroreduction.

Journal of the American Chemical Society·2026
Same journal

Plasmonic Re-Excitation Enables Superoxide-Mediated Ethane Conversion to Acetic Acid under Visible Light.

Journal of the American Chemical Society·2026
Same journal

Photocatalytic Controlled Halodefluorination of Perfluoroalkyl Compounds Using <i>N</i>-Arylphenothiazines.

Journal of the American Chemical Society·2026
Same journal

Photoinduced Disproportionation Enables Oxidative Addition of Aryl Iodides at a Gallium(I) Center.

Journal of the American Chemical Society·2026
Same journal

Biocatalytic C3 β-<i>O</i>-Glycosylation of Triterpenes and Sterols to Synthesize Natural and Unnatural Saponins.

Journal of the American Chemical Society·2026
查看所有相关文章

相关实验视频

Updated: Feb 10, 2026

In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks
07:14

In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks

Published on: June 20, 2025

935

一个响应环境的相互复制网络

Craig C Robertson1, Harold W Mackenzie1, Tamara Kosikova1

  • 1School of Chemistry and EaStCHEM , University of St Andrews , North Haugh St Andrews , Fife KY16 9ST , United Kingdom.

Journal of the American Chemical Society
|May 10, 2018
PubMed
概括
此摘要是机器生成的。

这项研究引入了使用四个构建块的新型相互复制系统. 该系统展示了高效,自主导的模板形成,并突出了环境对复制途径的影响.

更多相关视频

Time-dependent Increase in the Network Response to the Stimulation of Neuronal Cell Cultures on Micro-electrode Arrays
10:45

Time-dependent Increase in the Network Response to the Stimulation of Neuronal Cell Cultures on Micro-electrode Arrays

Published on: May 29, 2017

10.3K
Environmentally Induced Heritable Changes in Flax
08:10

Environmentally Induced Heritable Changes in Flax

Published on: January 26, 2011

10.6K

相关实验视频

Last Updated: Feb 10, 2026

In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks
07:14

In situ Photo-rheology Monitors Viscoelastic Changes in Photo-responsive Polymer Networks

Published on: June 20, 2025

935
Time-dependent Increase in the Network Response to the Stimulation of Neuronal Cell Cultures on Micro-electrode Arrays
10:45

Time-dependent Increase in the Network Response to the Stimulation of Neuronal Cell Cultures on Micro-electrode Arrays

Published on: May 29, 2017

10.3K
Environmentally Induced Heritable Changes in Flax
08:10

Environmentally Induced Heritable Changes in Flax

Published on: January 26, 2011

10.6K

科学领域:

  • 化学合成和超分子化学.
  • 系统化学和生命起源研究.
  • 催化和自我复制机制.

背景情况:

  • 模板导向合成对于创建复杂的分子架构至关重要.
  • 了解自我复制是探索生命起源的关键.
  • 交叉催化提供了一个强大的分子自我复制机制.

研究的目的:

  • 从基本的构建块设计和构建一个相互复制系统.
  • 研究交叉催化途径和模板导向合成.
  • 分析系统的行为和对环境条件的敏感性.

主要方法:

  • 使用1,3-双极循环加和凝结反应形成模板.
  • 使用补充识别站点进行模板导向合成.
  • 进行1H NMR光谱运动实验进行系统分析.

主要成果:

  • 用两个模板成功构建互复复制系统,Trans-TAB和TCD.
  • 已证明相互增强的交叉催化途径可以有效地形成模板.
  • 通过动力模拟确定了异质复合体的显著稳定性[转TAB•TCD.
  • 在网络中观察到增强的TAB的形成率和 diastereoselectivity.
  • 在特定环境条件下,自我复制器的最小贡献增加了10倍以上.

结论:

  • 互惠系统表现出突出的行为,超过其部分的总和.
  • 模板导向的交叉催化提供了一个有效的分子复制路径.
  • 复制网络对反应环境高度敏感,影响路径贡献.